Only River That Flows From a National Park Into an Ocean

North Two Ocean Creek is the only creek on Earth that splits directly on the Continental Divide, sending water to two oceans at once. You can literally stand with one foot in water heading to the Pacific and the other in water bound for the Gulf of Mexico. The site sits within Bridger-Teton National Forest at roughly 8,200 feet elevation and even lets fish cross between ocean watersheds. There's much more to uncover about this remarkable place.

Key Takeaways

• The Snake River originates in Grand Teton National Park and flows west, eventually reaching the Pacific Ocean via the Columbia River.
• Pacific Creek, a fork of Two Ocean Creek, joins the Snake River roughly one mile northwest of Moran, Wyoming.
• The Snake River travels approximately 1,353 miles from its watershed origin to the Pacific Ocean.
• Two Ocean Creek's Pacific fork connects Grand Teton's watershed directly to the Snake-Columbia river system draining into the Pacific.
• The Continental Divide splits Two Ocean Creek, with the right fork feeding the Snake River's Pacific-bound drainage through Bridger-Teton National Forest.

North Two Ocean Creek: The Only Creek That Flows to Both Oceans at Once

Deep in Wyoming's Teton Wilderness, North Two Ocean Creek pulls off something that sounds impossible: it flows in two directions at once, splitting into separate streams that drain into two different oceans.

This watershed anomaly sits at 8,200 feet on the continental divide, where the creek divides into Pacific Creek and Atlantic Creek roughly 100 yards above a marshy meadow.

From that split, you're looking at vastly different journeys. Pacific Creek travels 1,353 miles to the Pacific Ocean via the Snake and Columbia Rivers.

Atlantic Creek covers 3,488 miles to the Gulf of Mexico through the Yellowstone, Missouri, and Mississippi Rivers. Even fish cross the continental divide here through these connected shallow streams. Scientists believe this crossing allowed Yellowstone cutthroat trout to colonize Yellowstone Lake and the upper Yellowstone River watershed above Lower Falls.

This kind of inter-basin water connection is extraordinarily rare, with one of the few other examples being the Casiquiare Canal in South America, a natural waterway that links the Orinoco and Amazon river systems. The site earned National Natural Landmark designation in 1965, recognizing its extraordinary geographic significance. The pass lies within the Absaroka Volcanic Province, composed of approximately 50-million-year-old volcanic rock that predates the younger Yellowstone volcanic activity.

How One Creek Splits Exactly on the Continental Divide

At Two Ocean Pass in Wyoming's Teton Wilderness, North Two Ocean Creek does something cartographers still find worth marking on maps: it splits exactly on the continental divide, sending water simultaneously toward two oceans. This hydrological anomaly happens in timber, roughly 100 yards above a marshy meadow, where the creek measures just four to five feet wide and six inches deep.

You're looking at a continental pinpoint where North Two Ocean Creek divides almost equally between two distributaries. Atlantic Creek carries water 3,488 miles east through the Yellowstone, Missouri, and Mississippi Rivers. Pacific Creek sends water 1,353 miles west through the Snake and Columbia Rivers. Both streams meander briefly before fully committing their separate directions, making this quiet, narrow creek one of North America's most geographically significant water features.

The site sits within the Bridger-Teton National Forest, where visitors can literally stand with one foot in waters bound for the Gulf of Mexico and the other in waters bound for the Pacific Ocean. The marshy area adjacent to the Parting of the Waters even allows water to cover the continental divide, creating a rare pathway where a fish could theoretically swim between Pacific and Atlantic drainages. Much like the International Date Line separates Big and Little Diomede Islands by just 2.4 miles yet creates a 21-hour time difference, the continental divide at this pass separates two entirely different oceanic destinies within a creek barely four feet wide.

The Geography of Two Ocean Pass That Makes the Split Possible

Tucked between Yellowstone National Park to the north and Grand Teton National Park to the west, Two Ocean Pass sits at roughly 9,240 feet in Wyoming's Teton Wilderness, Bridger-Teton National Forest. This mountain pass straddles the Rocky Mountain Continental Divide, a designation reinforced by its 1965 National Natural Landmark status.

The surrounding terrain rests entirely on Eocene Absaroka volcanic substrate, specifically the Thorofare Creek Group of the Absaroka Volcanic Supergroup. That flat, gently graded surface allows water to distribute across the landscape rather than channeling forcefully in one direction. The pass sits near the southern boundary of Yellowstone National Park, placing it within the broader administrative reach of Bridger-Teton National Forest.

The actual parting point sits within a timbered meadow, roughly 100 yards above a marshy lowland. This low-relief topography on an ancient volcanic foundation creates the precise conditions that let one creek divide and drain toward two separate oceans. At the division point, Two Ocean Creek measures only four or five feet wide and about six inches deep, yet that modest flow reliably sustains the split without ever going dry.

Where Pacific Creek Goes After Leaving Two Ocean Pass

From Two Ocean Pass, Pacific Creek begins its southwest journey toward the Snake River, flowing roughly three miles along the Continental Divide's Pacific side.

You'll notice it first cuts through a timber corridor of dense forest before opening into expansive meadow meandering across marshy lowlands.

At low water, Pacific Creek measures just four to five feet wide and six inches deep, yet it carries enough flow to sustain a crucial wetlands habitat that supports fish migration between ocean basins.

The creek travels downward from 8,200 feet elevation, crossing ancient Thorofare Creek Group rocks beneath it. The site where Two Ocean Creek splits was designated a National Natural Landmark in 1965, recognizing the extraordinary geographic significance of this remote watershed junction.

Eventually, Pacific Creek joins the Snake River approximately one mile northwest of Moran, Wyoming, launching water on a 1,353-mile westward trek through Idaho toward the Pacific Ocean. Much like the rare quadripoint border area where Botswana, Namibia, Zambia, and Zimbabwe converge along the Zambezi River, this region captivates geographers for the remarkable way natural boundaries intersect in a single, compact zone.

Atlantic Creek's 3,488-Mile Route to the Gulf of Mexico

Where Atlantic Creek departs Two Ocean Pass, it sets out on a dramatically longer journey than its Pacific-bound twin — 3,488 miles northeast toward the Gulf of Mexico. This remarkable feat of long distance hydrology begins at the continental divide, where the creek flows through Bridger-Teton National Forest before joining the Yellowstone River.

From there, you're tracing waters that push through the Missouri River, then into the Mississippi, finally emptying into the Gulf of Mexico. That's 3,488 miles compared to just 1,353 miles for the Pacific route — more than double the distance from the same mountain pass.

The same spring snowmelt that splits equally at Two Ocean Creek ultimately travels two vastly different paths, making this one of North America's most compelling hydrological stories. In fact, the Parting of the Waters has been designated a National Natural Landmark, recognizing the rare geographic significance of a single creek branching into two ocean-bound drainages along the Continental Divide.

Why Two Ocean Creek Is the Only Place Fish Can Cross Between Oceans

What makes Two Ocean Creek truly singular is that it's the only place on Earth where fish can swim continuously through freshwater from one ocean's watershed to another. The pass sits at just 8,200 feet, low enough to avoid obstructions that would otherwise block fish passageways.

During wet springs, flooding creates a temporary marshland spanning the Continental Divide, dramatically expanding watershed connectivity between the Snake River's Pacific drainage and the Yellowstone River's Atlantic drainage. Even in drier conditions, the creek's gentle gradient keeps the route accessible.

This natural design enabled cutthroat trout to colonize Yellowstone Lake roughly 10,000 years ago, and today it still functions as an active migratory corridor — one with no equivalent anywhere else along North America's Continental Divide. The site was designated a National Natural Landmark in 1965 in recognition of its extraordinary hydrological and biological significance. In 1891, ichthyologist Barton Warren Evermann confirmed this connectivity firsthand, capturing trout at key points along Pacific Creek and Atlantic Creek within the pass to demonstrate the viable cross-divide fishway.

The Fish That Can Travel 6,000 Miles Without Leaving Freshwater

While Two Ocean Creek enables fish to cross between ocean watersheds, the Amazon's dorado catfish (*Brachyplatystoma rousseauxii*) takes freshwater migration to an entirely different scale — completing a round trip of up to 7,200 miles without ever touching saltwater.

This dorado migration begins in Peru's Andean headwaters, where larvae drift 3,595 miles downstream to Brazil's estuary in just one month.

You're looking at a species that spends 2–3 years maturing there before swimming back upstream to spawn — a freshwater endurance feat that surpasses even salmon migrations of 3,700 miles.

Dams and commercial fishing across four countries now threaten this extraordinary cycle. The dorado's torpedo-shaped body is specifically built for these grueling long-distance journeys, allowing adults to power upstream against strong currents while preying on other migratory fish along the way.

The Amazon's commercial fisheries depend heavily on species like the dorado, with roughly 80% of catches coming from migratory fish whose survival is tied to uninterrupted river access across the entire basin.

Without better management, one of nature's most remarkable long-distance journeys could disappear entirely from the Amazon basin.

How to Reach the Parting of the Waters on Foot

The Amazon's dorado catfish completes its epic journey without human guidance, but reaching the Parting of the Waters requires deliberate planning on your part.

You're looking at a 40-mile round trip from the nearest trailhead, putting the site roughly 20 miles deep into the Bridger-Teton Wilderness.

Your trail planning should account for multiple approach options.

You can follow the Continental Divide Trail, tracing either Pacific or Atlantic Creek, or access the site via the South Fork Buffalo River area.

Backcountry navigation here demands serious preparation since you're hiking through active grizzly bear habitat in one of the lower 48 states' most remote designated National Monuments.

Start hiking early, move quietly, and stay bear-aware throughout.

The reward is a narrow creek you can nearly jump across — yet it splits to feed two oceans. At this precise spot, the left fork flows toward the Atlantic while the right fork drains toward the Pacific Ocean. From here, Atlantic Creek embarks on a 3,448-mile journey before eventually reaching the Gulf and Atlantic Ocean via the Yellowstone, Missouri, and Mississippi Rivers.

Why the Parting of the Waters Deserves a Spot on Your Wyoming Itinerary

Few places on Earth let you stand over a creek and watch water split toward two different oceans. At the Parting of the Waters, that's exactly what happens. North Two Ocean Creek divides into Pacific Creek and Atlantic Creek right along the Continental Divide, sending water 1,353 miles west and 3,488 miles east simultaneously. It's the only river in North America that does this consistently.

Spring transforms the area into seasonal wetlands, when flooding actually allows fish to swim across the Divide between drainages. That fish migration solved the long-standing mystery of how Yellowstone cutthroat trout reached Yellowstone Lake. For photography tips, visit during spring or early summer when the marshy alpine meadow floods and the wooden distance sign makes a compelling focal point against the Wyoming landscape. The creek and its surrounding trails sit entirely within Bridger-Teton National Forest, making it an accessible backcountry destination for hikers exploring western Wyoming.